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Chennivek
@Chennivek
May 2019
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Bonjour , pouvez vous m'expliquer svp
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f(x)=(x-1)(1+x+x^2+x^3+x^4)
=
(x-1)*1 +(x-1)*x+(x-1)*x²+(x-1)*x³+
(x-1)x⁴
=x-1+x²-x+x³-x²+x⁴-x³+x⁵-x⁴
= -1+x⁵
f(x) / (x-1) =
1+x+x^2+x^3+x^4 =(-1+x⁵) /
(x-1)
2) S=1 +(2/3)+ (2/3)² +(2/3)³+(2/3)⁴
S= (-1+(2/3)⁵) / (2/3-1) = (1-32/143)/(-1/3)=211/81
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chennivek
January 2021 | 0 Respostas
Bonjour j'aimerai de l'aide pour toute derniere ques.
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Chennivek
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Bonjour , j'aurai besoin d'aide pour la c svp
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Chennivek
May 2019 | 0 Respostas
Confirmation de facrorisation, bonjour je voudrais savoir si c'est bon: c=(x+2)(x+1)-3(x-7)(x+1) =(x+1)(x+2-3x-21)?ou (x+1)(x+2-3x+21)?
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Chennivek
May 2019 | 0 Respostas
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Chennivek
May 2019 | 0 Respostas
Bonjour , juste pour confirmer , 1Kg/L=1000Kg/m^(3)
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Chennivek
May 2019 | 0 Respostas
Bonjour, j'ai un petit doute en chimie rho eau = 1kg/L = 1kg*L ou 1kg/L=1kg*L-1. et si c la 2eme combien est egale rho eau si on le convertit en L positif , donc c egale a 0.1kg*L ou pas
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= (x-1)*1 +(x-1)*x+(x-1)*x²+(x-1)*x³+(x-1)x⁴
=x-1+x²-x+x³-x²+x⁴-x³+x⁵-x⁴
= -1+x⁵
f(x) / (x-1) = 1+x+x^2+x^3+x^4 =(-1+x⁵) / (x-1)
2) S=1 +(2/3)+ (2/3)² +(2/3)³+(2/3)⁴
S= (-1+(2/3)⁵) / (2/3-1) = (1-32/143)/(-1/3)=211/81